Usually, not very much. During work breaks, I'll get about 45 minutes a day of Game Boy...maybe an hour of 3DS in bed? Maybe some good hours on the weekend if I'm not too busy and I'm in a Genesis or NES mood.
I've been marathon running Breath of the Wild, though. Bought it on launch day, and put a little under 100 hours into it in the first month. Not much time to play it during the week, if I want to sleep, but I've been pretty irresponsible on the weekends =)
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